Apparatus for forming glass articles



April 27, 1965 J. J. KAwEcKA APPARATUS FOR FORMING GLASS ARTICLES 7Sheets-Sheet 1 Filed Dec. 14, 1960 INVENTOR. `/m/A/ J/KweicL/ April 27,1965 J. J. KAwEcKA 3,180,720

APPARATUS FOR FORMING GLASS ARTICLES Filed Dec. 14, 1960 7 Sheets-Sheet2 INVENTOR. `///A/ ,Kwam/ BY 9 April 27, 1965 J. J. KAwEcKA 3,180,720

APPARATUS FOR FORMING GLASS ARTICLES 1. l f E IN VEN TOR. //A/ JweaA//fBY Q ).16

April 27, 1965 J. J. KAwEcKA APPARATUS FOR FORMING GLASS ARTICLES 7Sheets-Sheet 4 Filed Dec. 14, 1960 FIG. 5B

INVENTOR. JOHN J. KAWECKA BY@ 9. M 9L ATTORNEYS April 27, 1965 1J.KAwf-:cKA 3,180,720

APPARATUS FOR FORMING GLASS ARTICLES April 27, 1965 .1. KAwEcKA3,180,720

APPARATUS FOR FORMING GLASS ARTICLES Filed Dec. 14, 1960 Tsheets-sheet e74 f7 l l f3 1 l' l' l 55 Z1",-

94 l U l I 94 TTT BYQM ).flu/

April 27, 1965 J. J. KAwEcKA 3,180,720

APPARATUS FOR FORMING GLASS ARTICLES United States Patent() Thisinvention relatesto glass ware forming mechanism and in particular to aparison or blankk forming mold mechanism for shaping parisons orware ofthe narrow neck type. Such shaping maybe either for forming Aparisonswhich are ultimately blown to final forni or the forming of generallynarrow shapedv glass articles.

In present day machines of the gob fed type, it is the usualvproc'edureto charge the mold by delivering the gob to the mold kat the stationpreceding the pressing thereof vor by charging the mold at the pressingstation. In the forming of narrow neck ware it has been Vthe practice tocharge the parison mold while in inverted position through the openbottom of the mold disposed uppermostv at the time of charging. Thenar.- row neck ofthe article will'be formed at the lowermost portion `ofthe inverted mold in'partible' neck rings 0r a neck mold in registervwith the blank mold. In those cases where .the parison is formed by theoperation ofV a plunger, it is necessary that a bathe' plate be closedover the openbottom of the mold and the plunger moved vertically frombelow through the neck mold and into the blank mold. After the parisonhas been pressed, it has been necessary to invert the parison beforecommold and then downwardly into the parison mold cavity.

After the pressing is completed, the plunger is retracted,

the parison mold opened, and the mold retracted: When there issufiicientA clearance between the end of the plunger andthe neck mold,andithe open blank mold halves have been lowered below the end of theformed parison, the turret is indexed to laterally transfer the parisonto the blowing station. After the parisonvhas been'blown to iinal form,the turret is againl indexed to carry the completed ware to the takeoutstation. By

providing three sets of neck molds spaced 120 apart 0n the turret, it ispossible to have full overlap of/ operation,

that is, while the parison isbeing pressed, a previouslyA pressedparison is being blown to iinal fformand; a previously blown article isbeing discharged atthejtakeoutH station. t n

it is an object of this invention to provide a two-piece moldingapparatus-having positive opening andv closing motion.

It is an additional object of this yinvention to provide an apparatusfor forming two narrow neckparisons simultaneously.

pleting thev shaping of the article, which shaping is usually donebyuenclosing. the parison in a nish mold and introducing air underpressure to the hollow interior of the parison throughl the opening inthe formed;` neck -nish of the article. lBecause of the fact that it isnecessary to use a baffle plate to close the bottom of thek parison`mold beforeI pressing the parison, the linal article will have what aretermed baiiey marks.

In the present inventionv the charge orgob of molten glass-is deliveredto the Vparison moldy through the rneck mold about a portion of the neckmold.` The parison mold` isformed of'two open-faced halves so that thetwo halves maybe opened and closedand the parison may be formed in anupright position. When forming narrow neck parisons inV an uprightposition, a relatively f parison mold unless the mold is open.Furthermore,-

byV providing a two-piece parison mold, which is split along itsvertical heightgitfis unnecessary to use a baiile, hence, there yis nopossibility ofy having battle marks appear in the-finished ware. t'

ln" the present invention the split parisonmold 'is mounted for verticalmovement into-engagement with the neckmoldr' and closedthereon. The neckmold is carriedbya horizontally rotatable turret wherein a seriesof-neck molds 5 are. adapted to be moved. successively into'ysubstantially verticalalignment with the parison mold.. Thefgob'ormoldcharge is delivered to the closed parison mold from above throughthe neck mold. The

mechanism moves, the plunger, which is positioned above the turret,laterally into vertical alignment with the neck It is an additionalobjectof thisiinvention tod provide an apparatus for forming narrow neckparisons wherein plural parison mold valves arefheldV closed with equalforces. l

' It is a still further object of this invention toprovide a doublecavity split parison mold'in which Athe mechanism for holding the moldclosed isa self-'contained unit capable of limitedl horizontal movement.

Other and further objects will be apparent from the followingdescriptive material taken in combination with the attached drawingswhereinz' FIG. l is a `schematic perspective view ofY a glass formingunit incorporating theminvention.

FIG. 2 is a schematic side elevational ofthe parison mold cage of theinvention;

FIG. 3'is a schematic elevationalview'similar to FIG.-

2 on a slightly reduced Vscale vshowing the-mold Vhalves open.

direction ot arrow A- on FIG. 2.-? y' FIG. 5 is a partial sectional Viewtaken at line 5 5 on FIG. 3. t

FiG- 5A is a perspective view illustrating the mold halves opening andclosing equalizer-linkage at onefside thereof.

FIG. 5Bl is an exploded'view of the linkage ofk FIG. 5A.

FIG. 5C is perspective'view of thedisk retaining'housing ofl FIG. 5Aturned 90 about a vertical axis..

FiG.' 6 is a sectional view taken at line 6-5 on FIG. 4.

FlG. 7 is a partial vsectional viewtakenatlineV 7 7 on FlG. 6.

FIG. 8 is a partial sectional viewtaken atVv line -S on FIG. 6. Y v

FIG. 9 is a .partial elevational View looking'infthe direction oarrow Bon FIG. 2;

FG. lO-vis a diagrammatic viewof th-hydraulic circuit for operating theparison mold.

The accompanying: drawings illustrate the present invention as amechanism for userin a pluralY cavity mold, double gob operation inlthey forming of glass articles;

However, this invention is notkto be limited to -use in double goboperation as severaly of itsfeaturesmayrv also be applied to single moldandV singlegvobroperatinin A addition, this inventionfisalso applicableto' the pressing of iinished glass articles in either single'ordoub'lecavity pressing operation. v

As illustrated in FIG. l, thereis a well-known glass feeder 9 of thedouble gob type. This feeder is arranged to simultaneously deliver aAIpair of gobs or molten charges l@ of plastic and workable glasstosubstantially Patented Apr. 27, 1965 FIG. 4 is a schematic elevationalview lookingin 'the'v alsof/so n shears l2 actuated by thehydraulic-cylinder 13 through y suitable linkage 14. A forming-gmachine,generally'v designatedrl, is positioned beneath the feeder 9. The

formingvmachine is comprised o f a base ld with` vertical members 17 and18 connected to the top of the base lr6.' r[he members Il? and 1Ssupport an upper housing structure 19 which contains the driveymechanism for indexing a rotatable turret 20. The upper structure 19hasan underlying cover member El to prevent theV intrusion of foreignmaterial into the drive mechanism. Extending downwardly from the housingt9, is a bearing bracket ZZarranged to support a verticalv shaft upon v'which is mounted the turret 21B. The turret 2d carries or supports aplurality of set-s of neck molds 23 with each set being equally spacedcircumferentially about the turret y2d.` Thus it can be seen that theturret Ztl is arranged to transport the neck molds 23 from station tostation'iny succession. The parison mold holders 2d also referred to asra mold cage are located at the parison forming station andare arrangedfor vertical reciprocation to bring-the parison molds into and out ofcontact Y Vwith the neckmolds zdrcarried onvthe turret The parison moldcagey 24 is split along a radial line i Vof the turret and each halfcarries a pair of parison mold halves. -The parison mold cage is carriedby a crosshead 25 which in turn is attached to the upper end of avertically disposed piston rod 26. The piston rod 26 is arranged forreciprocation by a vertically disposed fluid motor 27 whose operation iscontrolled by the introduction of lluid under pressure through a pairofY conduits 28 and 29. Introduction of uid under pressure throughconduit 29, while conduit 28 is connected to exhaust, will raise themold cage 24; whereas introduction of tluid under pressure throughconduit 2li, accompanied by the y exhaust of fluid through conduit 29,will Vlower the mold cage 24.

In order to provide etlicient charging of the blank molds, a pair ofiixed gob guides 3i) and 3l extend vertically through the upper housingstructure 19. These gob guides are permanently located in alignment withthe neck molds 23 positioned' `at the pressing station. As charges 16are formed and severed from the feeder 9, they will be guided by a pairof funnels 32 and 33 and deilectors 34 and 35 into the open upper endsof the guides 3G and 31. Y

A vpair of glass pressing plungersy 36 and 37 are mounted in a guideway38 which is attached to the undersurface of the upper housing structurel?. These plungers 36 and 37 are adapted to be moved horizontally intoand out of alignment with the neck molds 25. After i [the Vcharges l@are delivered to the mold-cage 2d, the plungers 36 and 37 are moved froma remote position out ofr alignment withA the neck rings into a positionvertically above the neck rings and then are moved Y and continued inapplication Serial No. 60,416, tiled on` October 4, 1960, owned by theassignee of this application and reference may be had thereto for fulldetails ofthis mechanism.

As stated before, after the pressing has been completed the plungers 36and 37 are retracted upwardly until their lower ends clear the neckrings 23. and simultaneously the parison mold cage 2dY is opened andlowered so that` its upper surface will be below the lower end of theformed parisons P which depend from theV neck rings 23. V The turret isthen indexed l20 carrying'the formed` parisons to the next station Wherethe blow mold 39 (one-half of which is shown in open position in FlCnl)is` closed about the parison and the yparisons arefblown to final form.The blow mold is then opened and the turret is again indexed 120bringing the formed articles to the takeout station. At the takeoutstation a vertically vmovable transfer Yand coolinghead dlris elevateduntil infcontact with the .bottom surfaces of the formed articles atwhich time the neck rings .l3nt-this station are openedh nto releasearticles WV to the transferhead 491. At the same time that the transferhead 4% is'. being raised into approximate contact with the bottomsurfaces of the formed articles W, the ,finish cooling head 4l, havingcooling nozzles d2. depending therefrom, 'is moved downwardly'so as toextend the nozzles-42 into the neck areak of the formed articles WL,With the nozzles so posiu tioned, cooling air is suppliedthereto toinsure that the articles are Vsufficiently set up so that they .may behandled without `being deformed;V The transfer head di? is retracted andthecoolinghead 4l lis moved, verti-Y cally upward and the formedarticles which have been released from the neck rings 23 will beloweredso that a suitable horizontal transfer means i3 actuatedby ahydraulic cylinder 44 will move the articles from the transfer headed toa wind-box t5 'and then to a continuously moving horizontal beltconveyor 46. v The conveyor 46 carries the-formed articles. W away fromthe forming machine to the nextv operation which yusually isV anannealing llehr where the article is kheat Vtreated under controlledtemperature conditions.

With reference to FIGS. 2 to 9, the detailed disclosure of the parisonmold cage and its details of operation will be presented. Y v

As best shown in FIGS; 2 vand 4,v the parison mold holder 24- isclamped` to the movable crosshead 25 by means offa clamping device 47havingv clamping faces 48 atopposite ends thereof kwhich are adapted toyengage beveled surfaces 49 formed on a mold cage support base 50.Thecrosshead 25 i-s adapted to convey air, from below, Vinto 4,Contactwith the bottom surface of the base Sti. VThe base Sil has an elongatedbifurcated portion 5l which extend above the base along the sidesthereof. As previously stated, theparison mold cage 24 is a 'split moldcage and is 4formed of a firstl mold cage half 52 and a second mold cagehalf 53 which are adapted to be moved toward vand away from each other.Both parison mold cage halves 52 Vand 53 carry bifurcated portions 54and 55 whichfopen therein downward in the direction of the openingfofthe bifurcated portion 5l of the base Se.' Vertically extending pairs ofconnecting links 55 and 57 are'adapted to he pivotally. supported atoneend inthe portion 5l of the base 50 and to be pivotally supl .pairs oflinks 56'and157 the two mold cage halves 52 and 53, will' move towardandaway from each other with their complementary faces always` paralleltoreach other.

In order ytoinsure thatwthe rtwo rnold cage halves 52 and 53 will haveequal opening andclosing motions, a pivotal link generally designated 53in the form of a pair of disk-like elements 59 and `6?, is utilized toconnect the two mold cage ,halves together.

As best shown in FIGS. 3,'5, 5A, 5B1 and 5C, the disklike elements 59'and iii? are retained within a housing 61 which is connected to theouter bifurcation of theportion 5l of the base Sil. i The yhousing 6l isinternally recessed and the portion 5l4 of the haseY Sti-iscorrespondingly recessed so as to confine the disk-like elements 59 and60 to rotary .motion only. Connected between the disklike elementsarepivot pins 62 and 63. The pivot pin 62 `also extends through`v one endvof-a connecting link- 64 which has itsl other end pivotally connectedto a pin65 ywhichconnects =this end of the links 64to onevr of vvtheconnecting links l157: The pivot pin 63 also extends` through oneV endof a connecting linkA 66 which hasits other end vpivotallyv connected toone of the con- I nectingl links 56-by means of a pivot pin-67.

Incrder tov insure the proper clearance between the links` S'and- 66 andthelinks 57V and 64, horizontally extending bosseseS (FIGS. 5A and 5B)are-provided on the outersurface ofveach ofthe outermostv links 56v tionof the pivotal linkV 58 .will transmit the opening force through thelink. 66=to the other mold cage half 52. ItY should be'pointedfout atthis time thaty the above f describedlinkage 58'is presenten both sidesof the mold cage halves 52:'and 53. Thus,` through pivotalinterconnection of the two mold cage halves, movement of one moldrcagehalf Vw-ill be reflected-by equal and opposite movementofthe other mold`cagehalf.

Asbest seen in` FIG. 6, mold-cagel half 52 surrounds and'supportstwoparisonfmold halves 69 in sideby-side relationship. The` mold cage half53 also haspositioned thereintwo parison mold halves 70 which lincooperation with themold halves 69-form parison mold cavities 71 when inclosed position The parison moldhalves4 69 and 70 are supported withinthe moldy cage halves, by reason of the fact that retaining plates '72merely4 provide a loose connectionv between theA mold-'cage halvesy andthe Vmold halves. Also. they preventthe mold halves'fromV falling out ofthey cageihalves when. they areA opened. However, they donotpreventthe.parison moldhalves fromY moving horizontally within: the mold cagehalves to-a limited degree.,-

As can best be--seen in FIG. 6,V a plurality of forceapplyingmeansfinthe form ofepressure pins 74 extend throughy thewallsfofthe mold. cage .halves andy at their inner ends abut the outersurfaces of the mold halves 69 and 70. These pressurepins 74l are free`to slide through the yopenings in the-moldzcage halves and-.serve toapplying theV closing/forces to the` parisonv mold halves. While FIG. 6shows four pressure pins 74, ity shouldbe pointed out'that there areactually eight of thesefpins with `two. abutting thev outer surfaces ofeach parison. mold Ihalf, one above'the other.

TheV parisonmold cage half 52 is formedfwith a member 75- defining twocylindrical openings which extend horizontally outward from' the centerofl the mold cage-half. These horizontalopenings inthe member 75 areAspaced one-above the other and. provide cylindrical walls=which serveyas supporting elements for a pair` of hydraulic motors 76. Thehydraulic motors 76- are composed of a pairfofclosed cylinders. 77within .which ,pistonsy 78 are: adapted to reciprocate; Connected to.

abutting relationship with the outer ends of the pressure pins 74. Thusit can be seen that upon application of fluid under pressure to themotors 76 in such a fashion as to provide a pulling force on the pistonrods 79V the two pressure pins 74 'associated with each equalizer barS3-will apply equalclamping force to both of the moldV cage halvesf'tiwhich are retained in the moldcage half 53. l

The other pressure pins 74 which lie in the same horizontal yplane asthose mentioned above, also abut at their outer ends in force applyingrelationship with respect to-a second pair of horizontal equalizer bars84 y which are provided with trunion pivot connections with thecylinders 77 -of the hydraulic motors 76. vThe cylinders 7'7 are free tomove axially with respect to the cylindrical internal walls of themembers 7S within which they are mounted.

With particular reference to FIG. 8, the pivotalconnection between oneof the equalizer hars 34 and one of the hydraulic cylinders '77, isshown as providedby a pair of bearing members 35 which are seated withdi-v ametrically opposed openings in the cylinder 77. The two bearings25 allow the equalizer bar 84. to pivot about a vvertical axis midwaybetween theends of the equalizer bar 84. The center of the equalizer barS4' is r'provided with an opening 86 therethrough through which thepiston rod 79 is adaptedto extend. Sufficient clearance is provided sothat the equalizer barmay oscillate about the vertical axis witoutbinding on the piston rod 79.v 'Ihus it can be seen that uponactuationof the motor 76 to the vposition shown in FIG. 6, by the introduction ofduid under pressure through a conduit 37, the equalizer bars 83 and S4will clamp the moldhalves 69 and 7tl-together.

withy equal closing force. By reason of the fact that the kpressure pins'74, the piston motor cylinders 77, and

the equalizer bars S3 and` 84, are free to move 'in a horizontaldirection to a limited extent, the parison molds may close about neckmolds which are slightly oit-'center with respect to the parison molds.This limited horizontal oat of the parison moldhalves 69 and 7isadvantageous from the standpoint that alignment of the parison mold withthe neck rings is assured regardless vof what slight misalignment may bepresent in the neck mold mechanism.

Turning now to the operation of opening the parison molds, it can beseen from viewing FIGS. 4 and 6, that with the conduit 87connectedtoexhaust, the introduction of fluid A,under pressure through aconduit 88 will force the piston rods 79 out of thecylinders 77. Sinceeach piston rod 79 isconnected at its outer end to abar-SS by apivot pinS2 (see FIG. 9), any movementof the rod-79 will be transmitted tothe bar83:.v In a like mannereach cylinder 77 is free to shift axially to alirrrited extent within its support 75 and each cylinder is connectedtoa cross bar 34 (see FIG. S) by pivotfpinsl 85. Thus it can readily beseen that upon introduction of fluid underpressure to motor 76, throughconduit S3, they piston 7S will move toward the top of the sheet, as

viewed in PEG. 6, while at the same time the cylinder y shortdistanceuntil they contact the stopmembers SSD (see FIGS. 4, 7 and 9).The outward movement of thev bars S3 and 84 are limited by the clearancebetween the bars 83 and Se andstop members @of which there are two thatoverlie the ends of each equalizer bar S3 and Y 84. The stop members S9arefastened to the Outer ysurfaces of the parison mold cage halvesSZUand 53 and during' the openingmovementof the equalizer bars 83anddA-the openiugforce is applied by the equalizer. bars, to thesestopAmembers 89. As previouslyl stated, the

parison mold` cage halves` 52v and 53, arek mounted for movement awayfrom each other, and the previously de- As previously,Y

valve block 11). This exhaust port-130- isconnected to 134 in valveblock 110 at the right end of valve 111; As l can-be seen, fluidWill'pass frornchamber v140 to chamber 141` in valverblock 1131 andythence 4through l conduit 142 to chamber 134 in the valve block 114%lThe intro-`- ductionY of pressurefiiuidto chamber 1345will result in ashifting of the valve 111" to the left. Shifting of -the--valve 111tothe left-will connect'the-motor27 'and Vconduit 291 thereof -to-athrottlefvalve 13S-in the line leading to a sump or suitable 'collectingmeans.V i

Furthermore tluidunde'r'pressurein the conduit-117" will be incommunication'withtheconduit 28result1ng in lowering the blankmoldcage.v A throttle valve 136 is provided in the exhaust line from conduitZSand motor 27, and may be adjustedv to control the rate.. of elevatingv.the-blank' mold cage. ln the same-.manner the valve 135 about the neckrings. -Itsh'ould be pointed out thatY the"V neck rings have cooperatingiange structure (not shown) Ifclaimz.

1. An apparatus for simultaneouslyforming apair of narrow neck. parisonsin; ann uprightposition, comprising a hydraulic motor having.. a piston.and.. cylinder, .two pairs :of J complementary. parisonv mold halves,means for supporting. said mold halvesl in ksuchacmanner that they areloosely. retained in side-by-side relationship, a base,

vertically. extendingparallel linkage connected` between said supportingmeans and saidibase, saidsupport means being: operable for eifectingopening and 'closing movement of said moldhalves, means interconnecting.the. support means for each pair of moldhalves forlimiting the opening;and closing movements of said support means to equal andoppositemovements, means for mountingsaid jcylinder on said support means forrelative horizontal` motion, means extending. throughfsaid supports for;ap.- plying closing forces individually to.- said mold halves, anequalizer bar. connected to theforce; applying-means for two ofthe.side-by-side mold halves, means pivotally connectingsaid bar at itscenter to saidlpiston, .a second fequalizerbar connectedto the forceapplying'means forthe othertwo side-by side moldghalves,lmeansvpivotally connecting said. second bar at. its center to saidcylinder and means for operating saidqmotortoi eiectzclosingof saidAtwo. molds whereby.equalclosingfforce will be applied to bothzmolds.and the. molds .are independently. shiftable in 'ay horizontalplanewith respect to said: supportmeans. 2:"The apparatus of claim \1wherein said support means are f provided with internal chamberssurrounding said molds, a base, means connecting'said support means tosaid base. forv relative movement with respect' thereto,

means for; supplying airto said base, and means connecting `saidbase tosaid support .means for` directing said air v from'said base. to saidchambers when -said mold halves 'are in bothy open and closed position;

3. The apparatus of claim 2 wherein said air connecting meansvcomprisesa` at kplate Vreceivable 1in an elongated groove ontheuppersurface of said base landza tubular sleeve telescopicallyslidablein and extending through an which is adapted to bereceivedzwithin the inner annular.v 40 Openingin-.said plate, saidsleeve A-being connected to the grooves 137 shown in dotted lines onFIGS. 2 and 4. These grooves 137 are, asshown, provided with downwardlyand outwardly tapering upper surfaces so that upon closing the parisonmold halves about the neck ring, the mold halves may be slightly raisedand clamped against the bottom surface of the-neck molds. Thus it can beseen that upon closing of the parison molds about the neck molds, therewill be a positive locking of the parison mold halves with respect tothe neck molds so as to form a continuous parison forming cavity.

In summary it can be seen that the above described apparatus provides acompact arrangement for forming narrow neck parisons in an uprightposition within the two-piece parison mold. Charging of the parison moldis accomplished by feeding gobs through the neck rings into the closedparison molds. The pressing of the parisons is accomplished by movementof thev plungers vertically downward into the parison mold cavitiesthrough the neck rings. The advantage of a two-piece parison mold fornarrow neck ware forming is the elimination of lbatlie marks which arepresent when parison molds are loaded and pressed in an invertedposition.

It is also apparent from the above description that the parison formingmolds are capable of high speed operation and by reason of the limitedamount of floating of the parison mold halves 69 and 70 within the moldcage halves 52 and 53, the problem of proper alignment between the moldcavities and the neck ring cavities is eliminated.

It will, of course, bepunderstood that various details of constructionof the device may be modied to a wide range without departing from theprinciple of this invention and it is therefore not the purpose to limitthe patent granted hereon otherwise than necessitated by the scope ofthe appended claims.

support means and being in communication ywith the chamber therein.

4. An apparatus for simultaneously forming a pair of narrow neckparisons in an upright position, comprising a base member, arst moldcage half, a second mold cage half, vertically extending parallellinkage connecting said cages to said base for mounting said mold cagehalves on said base for relative opening and closing movement, meansconnected between said cages for limiting said cage halves to equalopening and closing movements, a fluid motor having a piston, piston rodand a cylinder, means for mounting said cylinder on said first mold cagehalf for limited relative horizontal motion, two pairs of complementaryparison .mold halves, means for loosely retaining two of said parisonmold halves in side-byside relationship with respect to said first moldcage half, means for loosely retaining the complementary parison moldhalves in side-by-side relationship with respect to said second moldcage half, said mold cage halves having a pair of spaced apart openingsformed in the wall thereof with the openings in one cage half being indiametrically opposed relationship with respect to the openings in theother cage half, horizontally shiftable members extending through theopenings in said mold cage halves and having one end in abuttingrelationship with respect to each parison mold half, a first equalizerbar in abutting relationship with the other end of said horizontallyshiftable members of two side-by-side mold halves, means pivotallyconnecting said bar at its center to said piston rod, a second equalizerbar in abutting relationship with the hoizontally shiftable members ofthe other two-side-byside mold halves, means pivotally connecting thecenter of said second bar to said cylinder and means for operating saidmotor to effect closing of said two molds whereby equal closing forcewill be applied to all the mold halves and the moldhalves arehorizontally shiftableA relative to said mold cage halves.

'5. The apparatus as defined in claim 4 wherein said chambers in saidmold halves for directing said air from said baseV to said chambers whensaid mold halves are Vin both open yand closed position.

6. The apparatus asr defined in claim wherein said connecting meanscomprises a plurality 'of at plates slidably received in elongatedgrooves formed in *the4 upper surface of said base and overlyingelongated openings in said base, a plurality of` tubular sleevesrconnected l to the mold cage, each sleeve being telescopically receivedin an opening in each plate, and communicatingwith the air supply insaid base.

'7. In; apparatus for forming a pair of narrow neckr parisons whereinsplit molds are looselyv retained in mold supporting members which areadapted to be moved toward and away from each other to eiect'openingandv closing of said split molds, the'irnprovement comprising,

a reciprocating piston type fluid motor for Veecting the opening andclosing of said mold supporting members, means integral with one of saidmold supporting members for supporting the cylinder of ,saidv motor withits axis horizontal, a piston rod of said motor extending between theApair of split molds, a iirst force transmitting equalizer bar pivotallyconnected at its center to the end of said piston rod with its ends inalignment with the mold halves carried by the other mold support, asecond torce transmitting equalizer bar pivotally connected at itscenter to ythe cylinder of said motor in parallel relationship withrespect to said iirst bar, pressure pins extending from the ends of saidbars into abutting relationshipwith the backs of said mold halves forequalizing the closing forces applied to said split molds, stop membersconnected to said mold supports and overlying the ends of said bars,whereby operation of said motor lto force the rod outwardly thereof willopen said mold supports andthe i split molds, andlmeansinterconnectingsaidrrnold sup- CII ports for confining said mold supports to equalmovements toward and awayfrom the vertical plane defined bythe splitVline ofnsaid splitmolds.

8. The Vapparatusl as defined in claim 7 wherein, said pistony rodextends through an opening in said one mold support and an alignedopening insaidother mold support to a pointbeyond the outside of saidother support.

9. rThe apparatus as deiined in claim 7 wherein, said meansVinterconnecting said mold supports lcomprises a relatively lined basemember, a pair of disks pivotally mounted to said base'with itspivot'axis coincident with said Yvertical plane and parallel linksconnected to said disks at diametrically opposed points thereof andhaving their ends pivotally` connected to the respective mold supportmembers. f

10. The apparatus asfdened in-claim'v7 `wherein said support memberhalvesyare provided Withzinternal `charnbers surroundingV said splitmolds, means for supplying air under pressure to said chambers, andmeans in the interior Wall of said chambers for directing said air fromsaid chambers onto'the external surfacenf said mold halves when in bothopen and closedposition; Y

References Cited by thelxaminer UNTED STATES PATENTS 1,737,524 5/29soubier! 65-224 2,357,501 Y 9/44 Carnahan 654-238 2,757,485 8/56Fedevich. 65`l67 l 2,834,155 f 5/58 Allen Y 65-360 2,949,701 8/ 60 Olsonet al V65-361 3,021,644 2/ 62 Lauclr 65-360 v FOREIGN PATENTS 426,311 4/35 Great Britain. 7 30,728 5/ 55 Great Britain.

DONALL H. SYLVESTER, Primary Examiner.

ARTHUR P. KENT, Examiner.

1. AN APPARATUS FOR SIMULTANEOUSLY FORMING A PAIR OF NARROW NECKPARISONS IN AN UNRIGHT POSITION, COMPRISING A HYDRAULIC MOTOR HAVING APISTON AND CYLINDER, TWO PAIRS OF COMPLEMENTARY PARISON MOLD HALVES,MEANS FOR SUPPORTING SAID MOLD HALVES IN SUCH A MANNER THAT THEY ARELOOSELY RETAINED IN SIDE-BY-SIDE RELATIONSHIP, A BASE, VERTICALLYEXTENDING PARALLEL LINKAGE CONNECTED BETWEEN SAID SUPPORTING MEANS ANDSAID BASE, SAID SUPPORT MEANS BEING OPERABLE FOR EFFECTING OPENING ANDCLOSING MOVEMENT OF SAID MOLD HALVES, MEANS INTERCONNECTING THE SUPPORTMEANS FOR EACH PAIR OF MOLD HALVES FRO LIMITING THE OPENING AND CLOSINGMOVEMENTS OF SAID SUPPORT MEANS TO EQUAL AND OPPOSITE MOVEMENTS, MEANSFOR MOUNTING SAID CYLINDER ON SAID SUPPORT MEANS FOR RELTIVE HORIZONTALMOTION, MEANS EXTENDING THROUGH SAID SUPPORTS FOR APPLYING CLOSINGFORCES INDIVIDUALLY TO SAID MOLD HALVES, AN EQUALIZER BAR CONNECTED TOTHE FORCE APPLYING MEANS FOR TWO OF THE SIDE-BY-SIDE MOLD HALVES, MEANSPIVOTALLY CONNECTING SAID BAR AT ITS CENTER TO SAID PISTON, A SECONDEQUALIZER BAR CONNECTED TO THE FORCE APPLYING MEANS FOR THE OTHER TWOSIDE-BY-SDE MOLD HALVES, MEANS PIVOTALLY CONNECTING SAID SECOND BAR ATITS CENTER TO SAID CYLINDER AND MEANS FOR OPERATING SAID MOTOR TO EFFECTCLOSING OF SAID TWO MOLDS WHEREBY EQUAL CLOSING FORCE WILL BE APPLIED TOBOTH MOLDS AND THE MOLDS ARE INDEPENDENTLY SHIFTABLE IN A HORIZONTALPLANE WITH RESPECT TO SAID SUPPORT MEANS.